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A bionic artificial hip joint with ingrowth function

A technology of in-growth and hip joints, applied in the field of bionic artificial hip joints, can solve the problems of bracket fixation and insufficient load-bearing performance, and achieve excellent tribological properties, excellent fault tolerance, and bone mass preservation

Active Publication Date: 2018-01-16
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ding Chunming and others invented "A Biphasic Scaffold for Tissue Engineering Joint and Its Preparation Method and Application" (Application No.: 201310202139.X), which provides a possibility for tissue engineering joints to replace the current artificial joints for biological reconstruction. There are still deficiencies in fixation and load-carrying performance

Method used

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  • A bionic artificial hip joint with ingrowth function
  • A bionic artificial hip joint with ingrowth function
  • A bionic artificial hip joint with ingrowth function

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0034] A bionic artificial hip joint prosthesis with in-growth function belongs to hemi-hip surface replacement. According to the patient's CT or MRI images, preliminarily determine the occurrence area and range of cartilage lesions, as well as the thickness of the cartilage layer (clinical research statistics show that the thickness of natural cartilage in the human body is between 0.5-2.5mm, and the results of each person are different, and it is necessary to determine the thickness of the cartilage layer. Obtained by corresponding detection means), complete the reconstruction of the three-dimensional anatomical model of the hip joint, and then determine the th...

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Abstract

The invention discloses a bionic artificial hip joint with in-growth function. The joint is composed of an artificial cartilage layer, an interface bonding layer and a porous support. Both the artificial cartilage and the porous support have an ellipsoidal surface; the joint surface wrapping angle is 60-120°, when the wrap angle is 80-120°, 3-6 convex columns uniformly distributed along the circumference of the inner surface of the prosthesis are designed; a bioactive porous coating is prepared on the outer surface of the femoral stem , and the coating material has a gradient change from the inside to the outside; the porous scaffold is designed as a gradient porous structure according to the finite element optimization results, with a pore diameter of 300-800 μm; a porosity of 20-85%; the present invention can preserve bone mass to the greatest extent And maintain the biomechanical characteristics of the femur, with good mechanical properties and tribological properties, by inducing or promoting the growth of osteoblasts to ensure the effective interface bonding strength between the prosthesis implant and the natural bone, and improve the stability of the prosthesis after implantation and service life.

Description

technical field [0001] The invention belongs to the technical field of artificial joints for repairing damaged articular cartilage, and in particular relates to a bionic artificial hip joint with an in-growth function. Background technique [0002] Hip joint lesions are caused by osteoarthritis, aseptic femoral head necrosis, bone tumors, etc., and with the aging population in the world, fractures caused by osteoporosis are becoming more and more prominent. Millions of patients need to be treated every year. Accepting joint repair treatment seriously affects the quality of life of patients. [0003] The main symptom of arthritic disease is articular cartilage lesions, and its treatment is mainly selected according to the degree of cartilage lesions. Cartilage transplantation can be used for repair in the initial stage, such as: bone marrow stimulation, autologous cartilage transplantation, allogeneic cartilage transplantation, autologous chondrocyte transplantation, artific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/32
Inventor 王玲康建峰庞小强李涤尘靳忠民刘亚雄贺健康连芩王满毅
Owner XI AN JIAOTONG UNIV
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